Raj, A Correlation of lipid layer thickness measurements with fluorescein tear film break-up and Schirmer's test. [electronic resource] - Eye (London, England) Apr 2005 - 484-5 p. digital Publication Type: Comment; Letter ISSN: 0950-222X Standard No.: 10.1038/sj.eye.6701489 doi Subjects--Topical Terms: Dry Eye Syndromes--etiologyHumansLipids--analysisMeibomian Glands--physiopathologyTears--metabolism